Vocabulary
The answer you get when you add two or more numbers together.
What is sum?
a symbol that tells you what math action to do, such as add, subtract, multiply, or divide.
What is an operator?
These separate terms in an expression.
Add or Subtract
-6a - a
-7a
1 + 9x + x
1 + 10x
a math sentence with numbers, variables and operators, but does not have an equal sign.
What is an expression?
a number, a variable, or numbers and letters multiplied together that are added or subtracted in an expression.
What is a term?
The 10 in this expression is the ....
6a - a + 10
What is the constant?
-9r - 8r
-17r
5b -2 + 4b + 5
9b + 3
Multiply a number by each part inside parentheses and then add or subtract the results.
What is distribute?
a letter or symbol that stands for a number we don't know yet.
What is a variable?
The "k" in this expression is the...
10k - 5 + 2k
What is the variable?
-k + 4k
3k
10x - 4 + 9 + 3x
13x + 5
The distance all the way around the outside of a shape.
What is perimeter?
A number that doesn't change and isn't attached to a letter.
What is a constant?
what an expression does not have.
What is an = sign?
-5x - x
-6x
4 - 2n + n + 10
14 - n
Using letters (like x or y) with numbers to show math ideas or problems.
What is algebraic?
The number that is multiplied by a variable in math.
What is the coefficient?
the 7 and the 3 in this expression are the...
7m - 4 + 3m
What are the coefficients?
-10r + 3r
-7r
4a + 3 + 10 - 9a
-5a + 13